// bai1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "stdio.h"
#include "conio.h"
#include "math.h"
struct sinhvien
{
    char hoten[31];
    int mssv;
    char ngaysinh[14];
    char lop[10];
    char khoa[50];
};
typedef struct sinhvien SINHVIEN;
void nhap(SINHVIEN &);
void xuat(SINHVIEN);
void nhap(SINHVIEN &x)
{
    printf("nhap ho ten: ");
    gets (x.hoten);
    printf("nhap ma so sinh vien: ");
    scanf("%d",&x.mssv);
    printf("nhap ngay sinh: ");
    scanf("%s",&x.ngaysinh);
    printf("nhap lop: ");
    scanf("%s",&x.lop);
    printf("nhap khoa: ");
    scanf("%s",&x.khoa);
}
void xuat(SINHVIEN x)
{
    printf("\n ho ten: %s",x.hoten);
    printf("\n ma so sinh vien: %d",x.mssv);
    printf("\n ngay sinh: %s",x.ngaysinh);
    printf("\n lop: %s",x.lop);
    printf("\n khoa: %s",x.khoa);

}
void main()
{
    SINHVIEN sv;
    nhap(sv);
    xuat(sv);
    getch();
}



------------
// bai2.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "stdio.h"
#include "conio.h"
#include "math.h"
struct diem
{
    int x,y;
};
typedef struct diem DIEM;
struct tamgiac
{
    diem A,B,C;
};
typedef struct tamgiac TAMGIAC;
void nhap(TAMGIAC &p)
{
    printf("nhap toa do A: ");
    scanf("%d",&p.A.x);
    scanf("%d",&p.A.y);
    printf("nhap toa do B: ");
    scanf("%d",&p.B.x);
    scanf("%d",&p.B.y);
    printf("nhap toa do C: ");
    scanf("%d",&p.C.x);
    scanf("%d",&p.C.y);
}
void xuat(TAMGIAC p)
{
    printf("\n A(%d;%d)",p.A.x,p.A.y);
    printf("\n B(%d;%d)",p.B.x,p.B.y);
    printf("\n C(%d;%d)",p.C.x,p.C.y);
}
void main()
{
    TAMGIAC tg;
    nhap(tg);
    xuat(tg);
    getch();
}